| 摘要 |
A plug for sealing an opening in a concrete structure, in particular an opening of a separation portion of the concrete structure, said plug comprising a stem with a base at the distal end and a seal element provided on the stem frontal of said base, wherein the seal element is manufactured in a material having a lower hardness than the stem, characterized in that a free space is defined between the distal end of the seal element and the frontal end of the base. |
